f2fs: avoid write_checkpoint if f2fs is mounted readonly

Do not change any partition when f2fs is changed to readonly mode.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-01-23 18:43:45 -08:00
commit 11504a8e7e